Improvement in flour-bolts



m H. N. P-ETERSEN.

Improvement in Flour Bolts.

N0. 122,054. l Patented Dem-19; 1871.

ATENT Orrrcn lnvlPnovEivlENT |`N FLouR-BoLTs.

Specification forming part of Letters Patent N o. 122,054, dated December 19, 1871.l

To all 'whomt't may concern:

Be it known that I, HERMAN N. PETERsEN, of the city of Peoria, in the county of Peoria', in the State of Illinois, have invented a new and Improved Bolting Apparat-us; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawing making a part of this specifica- 4 tion, in which like letters of reference refer to like parts, and in which- Figure 1 represents a perspective view of the bolt; Fig. 2, longitudinal section through c a c a, Fig. 3 5 and Fig. 3, an end View.

` and cap D; A entrance-end, and A exit-end for flour. The bolting-cloth is nailed to the edge of each head. C C U C are ribs or bars, to which the bolting-cloth is sewed. They run, as in the usual Inode, longitudinally of the bolt, and are four in number, `placed lequidistant around the` bolt, and inclosed in a canvas or inuslin cover, to which the bolting-cloth ,n n a is sewed--that is, to that part of said cover on the under surface of the ribs, as may be seen in the end view of Fig. 3. Theseribs are provided with thumb-'screws i at theends and at the intermediate circular stretchers F, which pass from the upper 'surface of rib through it and the cloth, and press on a plate, lc, on the face of each head or end and intermediate circular stretcher or stretchers F, which are used to stretch the cloth u n a latitudinally between each rib C C C.

The following description of one endof apparatus will be sufficient, as the other end is but a modification of this: D, a metal cap, with aiian ge,

d, near the plane of the head or end A and A, the y exterior of the socket being iiush with the surface of shaft B, so as topermit the sliding hub E to lpass freely thereon. The latter also' carries a ange, e, in which are set the spokes or arm h It h h, which carry the bolt-head or end A 5 the extremities of each spoke is fixed to the head A.

A slot, a, in the hub E is filled with a screw or pin, b, to confine the hub E, and yet allow of a reasonable space for screwing it toward the end of shaft B. The latter is accomplished by means of two rods, g g, passing through the flanges of the cap D and sliding hub E, and fitted with nuts on the exterior surface of the cap D.

The operation of this invention is as follows: To stretch the cloth longitudinally of the bolt the rods g g g g at either end, connecting the flanges d c of the cap D and hub E, bring the head A further outward, stretching the cloth n n n. VThe ribs C C C U, to which are fastened the cloth, stretch the latter longitudinally by increasing (by pressure of screwst' 'it' 'i on plates k It k It) the distance between said ribs andthe heads AA and stretchers F and c-that is, enlarging the circle of the cloth. The latter may be removed for re- 'pairs by simply extracting the tacks at either end of bolt and the cloth will slip olf.

The advantages of this device are as follows: By placing the ribs C C (l C on the outside ofthe cloth a n a n and stretching the cloth on a circle, a continuous bolting surface is presented to the iiour, instead of the usual or common plan, in which thereare sixlsides to the bolt and interior ribs at each angle which carry up the unbolted y iour more than one-half way, choking so much of the bolting-cloth, and then dumping said iiour onto the bottom ofthe bolt, stretching and wearing the cloth, and particularly at those parts between the ribs. My plan chers a continuous surface to the flour, so that the cloth wears equally throughout, doing at least asV much as one and a half times more work than the interior ribbed bolts, the cloth lasting at least half as much longer. Further, the No. l0 holting-cloth when used onmy apparatus separates the iiour as white and as fine as the No. 12. (a finer cloth) does on the common bolting apparatus. Further, the cloth can be removed in a few moments by simply extracting the tacks, which is the `only attachment between the cloth and the bolt-frame.

2. The ribs C, provided with set-,screwsfi for i Having thus fully described myinvention, what stretehingtl'le cloth latitudinally, in combination able for stretching the cloth, substantially as with the heads A of a. flour-bolt, constructed and shown and set forth.

arranged to operate substantially as set forth. Iu testiluonythatclaim theforegoingimprove- 3. Acircularour-bolt, eonsistngofheadsAA ment in Hour-bolts 'I have hereunto set my hand Y and stretcher F, ribs C with set-screws i, shaft B, this 29th day of August, A. D. 1871.

provided with latdjustable sliding hubs ASE ha'v'i'ug HERMAN N. PETERSEN. spokes h for supporting the heads, and conuect- Witnesses: ing With caps D 011 the ends of the shaft by serew- E. THURLOW, v

rods g, by which the said hubs are made adjust- H. W. WELLS.' (57) 

